Method of making bearings or the like



C4 BERTHET METHOD oF MAKms BEARINGS 0R THE L KE Patented Jan. 9, 1923.

UNITED STATES PATENT OFFICE.

CHARLES BEBTHET, 0F DETROIT, MICHIGAN, ASSIGNOR TO MUZZY-LYON COMPANY, OF DETROIT, MICHIGAN, A CORPORATION 0F MICHIGAN.

METHOD OF MAKING BEARINGS 0R THE LIKE.

Application med .Tune 18, 1921. Serial No. 478,771.

To all 'whom it may concern Be it known that I, CHARLES BERTHET. a citizen of the United States of America, residin at Detroit, in the county of Vayne and tate of Michigan, have invented certain new and useful Improvements in Methods of Making Bearings or the like. of which the following is a specitication, reference being had therein to the accompanying drawings.

The invention relates to the method of making hearings, bushings. etc.` and refers particularly to bearings or the like having lined backs. The object of the invention is to make with the minimum number of opcrations` a bearing or the like which comprises two true semi-cylindrical members. 1With this object in view, the invention resides in the novel features hereinafter set forth.

In the drawings:

Figure 1 is an end view partly in section ol a cylindrical bearing before being operated upon;

Figure 2 is a cross section through the bearing and showing a form of mechanism for deforming the same;

Figure 3 is an end view of the separated semi-cylindrical members after the bearing blank has been deformed and severed.

1 is a cylindrical bearing blank having the back 2 with the radial flange 3 at its outer ends, and the lining 4 within the back. The external and internal radii of the back and lining are greater than the corresponding radii of the back and lining of the finished bearing; but, the thickness ot' the back und lining are the same as those of the back and lining of the finished bearing. The cylindrical blank may be formed after any usual manner, such as, casting and machining the back, liningr the same, and finishing to the desired radii.

The cylindrical blank 1 first has diametrically opposite sides fiattened by suitable means such as thedies 5 which deform the blank to form end portions 6 having their radii reduced to the corresponding desired radii of the completed bearing, and also to form the intermediate portion 7 connecting the end portions 6. This intermediate portion comprises two parts, each of which connects adjacent side edges of the end portions.

The next operation comprises the removing of the intermediate portion 7 as by cutting the blank. The radii of the cylindrical blank are sufficiently greater than the corresponding desired radii of the completed bearing and also the amount of deforming of the cylindrical blank is such that both compensate for the material removed in the intermediate portion so that each of the two end portions are true semicylindrical members and together form a true cylindrical bearing.

The removal of the intermediate portion T may be accomplished by simply sawing the deformed blank or by a colnbination of sawing and milling or grinding depending upon the desired finish of' the. abutting side edges of the two end portions (3. In either case, the amount of material to be removed is predetermined so that the radii of the. cylindrical blank and also the amount of deforming of this cylindrical blank is predetermined for each size of finished bear- IVhat I claim asmyl invention is:

1. In the method of making bearings or the like, the forming of a cylindrical blank of greater radius than that of the completed article, the detorming of the cylindrical blank to produce two end portions lhaving their radii reduced to the desired radii of the completed article and also an intermediate portion connecting said end portions, and the removing of the intermediate portion.

In the method of making bearings or the like. the forming of a cylindrical blank having its wall corresponding in thickness to that of the completed article and having its inner and outer faces ofgreater radii than the corres onding radii of the completed article, t e deforming of the cylindrical blank to roduce two end portions having their radii -reduced to 'the desired radii of the completed article and also an intermediate portion connecting said end portions, and the removing of the intermediate portion, the radii of the tubular blank and the amount of deforming thereof being such as to compensate for the material in the removed intermediate portion.

In testimony whereof I affix my signature.

CHARLES BERTHET. 

